drm/amd/display: increase Z9 latency to workaround underflow in Z9
[Why] Z9 latency is higher than when we originally tuned the watermark parameters, causing underflow. Increasing the value until the latency issues is resolved. Reviewed-by:Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by:
Agustin Gutierrez Sanchez <agustin.gutierrez@amd.com> Signed-off-by:
Eric Yang <Eric.Yang2@amd.com> Tested-by:
Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
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